Breaker.



J. S. MARQUETTE.

BREAKER.

APPLICATION FILED mm1. |912.

Patented Oct. 3, 1916.

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l. S. MAHQUETTE.

BREAKER.

APPLICATION FILED IAN. 21, 19:2.

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JOHNS.' MARQUETTE; or BLTIMORE, MARY'LAND.

BREAKEJR.

vApplication filed January 27, 19112.V

To all whom t may concern Be it known that I, JOHN S.-MARQUETTE, a citizen of the United States, residing at Baltimore city, in the State of Maryland, have invented a new and useful Breaker, of which the following is a specification, l

My invention relates to improvements in breaking machines, and the object of my improvement is the providing of a breaking machine of highY speed whereby a mass of material is prevented from accumulating on the grinding parts.

A further object of my invention is lthe providing of means of freeing the grinding parts of obstruction automatically.y

VA further Object of my invention is the providing of means Of automatically restoring the grinding means to normal positiony after'` displacement by obstructions.

providing of means offclearance in thesupports for the grinding bars.

A further object of my invention is the struction, combination and arrangement of` parts as hereinafter specifically described l operated by pulley 21.

modifications can be resorted to which come within the scope of the claims hereunto appended.

In the drawings, Figure 1 is a side view in elevation of my entire machine as installed for breaking oyster shells to the degree of fineness required in the poultry trade; Fig. 2 is a sectional view taken at right angles to that shown in Fig. 1 of the machine properenlarged with parts of the casing removed, Fig. 3 is a plan view of the machine with the top casing removed and Fig. 4 is an enlarged view of the grinding bars and the knockdown apron.

Similar numerals refer to similar parts throughout the several views.

1 is the operating drum, 2 are the beater blades secured in recesses in operating drum 1 by means of bolts 3.

4 are the grinding blades preferably made square in cross section so that new grinding i ASpecrication of Letters Patent.l

A further object of my invention is thev Patented oet. 3, 1916. serial narrare?. Y l

edges may be presented upon reversing and are secured toa yielding support or knockdown apron 5 by means of bolts 6 which go through4 holes in said bars, said knocked down apron 5 having undercut faces adjacent to the movable blades forming a clearance. Knockdown apron 5 is journaled in bearings 7 by means of shaft 9 and the slotted levers 8 are secured A`to shaft 9 to which knockdown apron 5 is secured.

1 0 is a spring'bar upon which operates spring 11, 12 is a collar secured to spring bar 1.0 and against which spring 11 operates, the, other end of the spring bearing lagainst lug 13 and through which lug spring bar 10 operates. v

14 is a web secured to the outside.I casingk 4i may assume a position shown in dotinV Fig'. 4. Operating drum 1 is mounted on lshaft 18 which shaft is' journaled in bearing' 19, has flywheels 20 secured to it and is 22 is the hopper placed on the outside casing 23 in such a position as to drop the materials to be ground directly on to the grinding blades 4, and thereby the falling material being in a position to be struck by the revolving beater blades 2.

23 is the casing around the machine forming the supports for the hopper, bearings, etc.

24 is the slotted baffle casing or guide located substantially at the lower edge of the hopper to prevent the ingoing materialfrom falling back toward the center of operating drum 11.

25 is the exhaust pipe leading to and connecting with the exhaust fan 26 and is connected under the top of casing23 and is used for sucking the dust out of the machine or to cause an ingoing current of air in the hopper thus preventing dust in the operating room.

27 is the conveyer which conveys the ground product which has been discharged from the bottom of casing 23 up to spout 28 which spent discharges into hopper 29 endl of screen 30. Screen 3() is on shaft 32; and is revolved byit, thehopper 29k being on one end of screenlBO receives the product deliveredby conveyer 27 and feeds screen. 30; the coarser particles working toward` finer particles Y being dis- ;v

hopper 22,- ther charged through The operation of therdescribed embodiment of my machine is as fllowszShell'sto be groundpa're dumped slowly into hopper 22 where they fall by' gravity onto lthe chute as finished prodgri'nding blades 4 being directed if required tered 'that-` would not feed between the grind- Y ing blades l then the knockdown apron 5 to which are secured the grinding blades 4l gives way against the pressure of spring l1 andy allows the machine to vbe cleared said springs restoring the apron to'normal position as soon as free. After going through the breaker the ground or un'ground shellsV fall down to conveyer 27 andare by it elevatedup and discharged through spout '28 into hopper 29 onto screen 30. The screened or fine parts going through and are discharged through ehute 31. The unscreened or larger parts being conveyed back by the Gopies of this patent may be obtained for revolving I screen to and discharged into hopper 22 for regrinding.

In `this specification, when the word material is used I meanto include shells, bones orany other substance that might require to Vbe ground. When I use the term, revolvingblades and especially as I have described the blades'l in drum l, I wish it'understood that I mean, iXed,swiveled, beater or other of the ordinarily constructed revolving breaker and do notwish toy limit myself to any oneA of the above mentioned@ constructions. "f f 1. In a breaker or grinding machine, the coinbinationof a pair of relatively stationary blades, with a movable blade adapted to pass between the said stationary blades said stationary blades having parallel sides, and ayieldingl apron having an undercut faceL adjacent toV the movable blades.

2. In a breaker or grinding machine, the combination of a pair of relatively stationary blades, ,with a movable blade 4adapted to pass between the said stationary blades, said stationary blades being secured to an apron, and a pivoted apron having an undercut frontal face, a slotted lever, secured to the pivot of said apron and a spring 'controlled bar freely connected with said lever for yieldingly holding said apron in normal K position. p

' JOHN s. MARQUETTE.

Witnesses:

DANL F. REISENWEBER, WILLIAM W. VARNEY.

ve cents each, by addressing the Gommissiqner of Patents. Washington, D. GJ 

